Cross head



Feb. 27, 1940.

H. E. MUCHNIC CROSS HEAD Filed Dec. 51, 1958 'Patented Feb. 27, 1940 ETENT fiiiifics .CROSS HEAD. Henry E. Millennio, Atchison, Kans,: assigner to 1'lhe Locomotive Finished Material Company,- I l Atchsompans., a eorporationof-Kansas` Appia-at'*im December si, iesajseriaine. 248,680

' fz claims. (omer- 20) l My invention relates to crossheads of steam engines andfmore'particularlyyto cross heads employed on locomotives for Vtransnn'tting the reciprc-catory movements ofthe' pistons of the f cylinders to the crankpins of the ydrive wheels y 4through' vthe medium of the main rods.

The invention yhas for itsvwobject' the provision cfav construction wherein `the connection between the cross heads and the piston-stems or i5l() yrods is obtained by means which willpermit thel connection to be easily 4effected A and disconnection or disassembly to be as readilymadeinthe event of repair or renewal.

1 In constructions asheretofore made, the pis "i6 ton rods are connected to the cross heads by means ofivkeys which must be wedged or tightly driveninto registering'slots or'. openings lin the piston rods and cross headsf These keys become to tightly wedged, as aresult of the hammer l remove same.`

.Furthermore v*the piston-rods of theser prior.

culties; and although the` it or 'connection between the cross headA and the piston-,rod retains the principle of the key,y my improved structure 40- permits a much easier assembly as well as disassembly to be Inadei namely a structure whereinthe use of keys is eliminated while at the same .time providing an intimate interengaging connection between the cross heads and the` pistonrods"'adapted togwithstand vthe reciprocatory thrusts. y y l The above enumerated' objectsandythe advan- `f tages inherent in the invention will all be readilyy comprehended from vthe followingdetailed dee scription vof the drawing wherein:

Figure l isa side elevation of my improved cross head with aportion of a piston rod connected thereto,

vFigure 2 is an inverted plan View,` with por-l 58 `tionsbroken away'and in section; the view being f thev linef-j' of Figure l looking in theldirection' blows, that at timesvit isv extremely difcult to cross heads `that it" is impossible to break the l joint or connectionfbetween the rods and thel taken on the line 2 2 of `Figure `1 and looking' A' in `the directionof the arrows.

Figure 3 is a vertical sectional view taken on o the arrows. i ,t im" Figure 4 is a sectional View "takenon the line l-ixofjligure ll as indicatedby the arrows.' lviy invention relates to cross 'heads .'arldfparticularly to the type employed on locomotives andV comprises the main body yportieriI ill vconsisting oli) ofthe .two vertically disposed andlaterally spaced l apart'walls il, ifi, forslidably receiving theusualxv `bars or'slideways therebetween and"p'refl 4elf-ably providedzat the `bottom with; a reenfor'cing vstrap, a portion whereof is` shown at 31d; -while the side WaIlsinterrnediate of `the topsand bottoms; `are yprovided. `with the holes 1,3' for 'receiving the usual wrist-pin jfor'connecting the main rod to. the cross head. y r

The side walls il, il, at 0 see Figure 3, and this portion yMl is'providedwithan extension l5, disposed to one sideof the'lon 1 ygitudinal median vline of the crossv head. lThe 4extension le is enlarged or-givon arcuatev.for=f25 mation, intermediate-of itsvt'op and,botijvorn'andv this enlarged or arcuate portion formed to constitute onehalf' or part. of a sleeve, the bore or vsocket .whereof is adapted to receive the vend of the piston-rod of which a portion is shown at It. 130

The bore ofmthis sleeve member ltisshown provided withserni-circular grooves l1,jseeFig ure 2, of 'any' suitable number vand preferably arranged in 'spaced relation lengthwise of the sleeve .forming member i5. `35

flheoth'er wall ofthe piston-rod receiving socket or sleeve portion consists'of a removable` compleme'ntaryl member lor cap. i8 which is preierab-ly-coextensive.With'the length of the sleeve forming rnernlzxer` l5, withits inner) surface or 40 Vsocket alsoprovided with semi-circular igrooves i9, whicharey co'extensive" or circulanterentiavllyvv aligned 'with 'the semi-circulargrooves il inthe body extension or sleeve forming member i5.

j 3 The side walls of thegrooves I'l and i9 are/i5 preferably tapered*A slightly as shown in Figure 2, to effect afilrmennon-vibrating relation with the preferably tapered annular collars or'iianges iii formed on the end of the pistonfrodan'd .spaced apart longitudinally, to provide multiple .50 t .i points of attaclimentv or interengaging" relation. v .between the cross head andthe piston-rod.A

The complementary sleeve forming member. `or I cap. l'lisshown secured to the socketed sideof the extension or sleeve forming member l5 bya- Il K neend ofthe cross f `head,l are. connected together as shown. at iii,

plurality of bolts 2|. Inorder, however, that `lugs 22.

the bolts' 2| may not be subjected to or made to carry the piston-rod thrusts, I prefer to provide an interengaging relation between the cap I8 and the portion l5 which latteris preferably an integral part of the cross head. In the particular exemplication, this is accomplished by providing the cap I8 with lugs or extensions 22, while the cross head wall portion i4 and the lower end of the sleeve-forming member i5 are provided with cut-,outs or recesses 23 adapted to receive Vthel As is apparent from this'cons1'.rl1ction,`

the cap holding bolts will not be subjected to the piston-rodA thrusts, but, on the other hand, the portion ofv the thrusts encounteredby the cap member will be transmitted through the lugs or extensions 22; 22 tothe main body of the cross head.r

rod.

vthe cross head may be very quickly and easily made in the event of repair or replacement by .simply removing the nuts on the bolts 2l, which enables 'the vcap member I8 with its lugs 22 to be moved laterally out lof interengaging relation vwithv the body lof the cross head causing the grooves in ther cap member to be movedvout of y engagement with the annular flanges or ycollars 20 of the pistonrodand permittingthe pistonrod to be released from theg'rooves in the integral portion ofthe cross head.

The exemplication shown is a practicable emy bodiment of the invention which-has beenl de-fv` scribed in terms employed for purposes of`de- A scription and not as terms Aof limitation, as modifications are possiblev and may be made without, however, -.departingfrom the spirit of my invention claims. w

Whatlclaim is: I

l. A cross head of the character described vas expressed inl the-appended I comprising a main body provided at oney end with an extensionfsocketed on one side; a complementary member-provided wit'hva socketon one- 'Y side to match the socket of said extension; the extension` and complementary member having interengaging surfaces whereby thrusts encountered by the complementary member will be transmitted tothe main body; and means where-` l by the complementary member is removably'se `cured to thel socket'ed sideof said extension.

2. vA cross head ofA` the character described comprising a main-body provided with asocketed l portionand a shoulder adjacent they socketeldmv portion; a complementary member formed vto abut said shoulder and socketed on `one face to',

match the-socket'ed portion of the main bodyto mentary member being provided wtih interengaging surfaces: and meanswhereby thecomplementaryr member is removably held in place.A

vreceive a piston rod, the body and said comple-` .3

AE. MUCHNiCf i 

